... heat source 3 3-layer bottom,energy saving 4.OEM Popular frying pan:nonstick cookware 1,Diameter/Height:12-40cm open frypan without cover2,Material ... .2mm 3,Feature:R shape, no step with cut edge, nonstick coating inside and mirror polishing outside4,Bottom Plate:3mm aluminum ... grade s/s material safe for food touching, energy saving.: Popular frying pan:nonstick cookware